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    <meta charset="UTF-8">
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    <title>作为一个函数调用-2</title>
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<body>
    <p>全局函数 myFunction() 会自动成为 window 对象的方法。</p>
    <p>myFunction() 类似于 window.myFunction()。</p>
    <p id="demo"></p>
    <script>
        function myFunction(a, b) {
            return a * b;
        }
        document.getElementById("demo").innerHTML = window.myFunction(10, 2); 
    </script>
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